I recently installed an sm420 and now some plans have changed. I will still be using a sm420 but a different one instead. I will be installing a rebuilt one so I don't have to get back into it this for a while. The question I have is Can I remove the pilot bearing to test fit it without damage. I never like to install a tranny without first test fitting the pilot bearing before it is installed. You think I could just take a scotch/brillo/emery pad to the new tranny's input shaft. That last 1/2" of insertion is always the best!